feat: CategoriesView
fully functional
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filippo-ferrari
parent
386687137e
commit
8b9bfedbfe
1 changed files with 109 additions and 45 deletions
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@ -5,62 +5,109 @@ import com.application.munera.services.CategoryService;
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import com.application.munera.views.MainLayout;
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import com.vaadin.flow.component.UI;
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import com.vaadin.flow.component.button.Button;
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import com.vaadin.flow.component.button.ButtonVariant;
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import com.vaadin.flow.component.dependency.Uses;
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import com.vaadin.flow.component.formlayout.FormLayout;
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import com.vaadin.flow.component.grid.Grid;
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import com.vaadin.flow.component.grid.GridVariant;
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import com.vaadin.flow.component.html.Div;
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import com.vaadin.flow.component.icon.Icon;
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import com.vaadin.flow.component.notification.Notification;
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import com.vaadin.flow.component.orderedlayout.VerticalLayout;
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import com.vaadin.flow.component.notification.NotificationVariant;
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import com.vaadin.flow.component.orderedlayout.HorizontalLayout;
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import com.vaadin.flow.component.splitlayout.SplitLayout;
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import com.vaadin.flow.component.textfield.TextField;
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import com.vaadin.flow.data.binder.BeanValidationBinder;
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import com.vaadin.flow.router.BeforeEnterEvent;
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import com.vaadin.flow.router.BeforeEnterObserver;
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import com.vaadin.flow.router.PageTitle;
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import com.vaadin.flow.router.Route;
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import org.springframework.beans.factory.annotation.Autowired;
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import com.vaadin.flow.data.binder.ValidationException;
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import com.vaadin.flow.router.*;
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import com.vaadin.flow.spring.data.VaadinSpringDataHelpers;
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import org.springframework.data.domain.PageRequest;
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import org.springframework.orm.ObjectOptimisticLockingFailureException;
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import java.util.Optional;
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@PageTitle("Categories")
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@Route(value = "categories/:categoryID?/:action?(edit)", layout = MainLayout.class)
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public class CategoriesView extends VerticalLayout implements BeforeEnterObserver {
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@Uses(Icon.class)
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public class CategoriesView extends Div implements BeforeEnterObserver {
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private final String CATEGORY_ID = "categoryID";
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private final TextField categoryNameField = new TextField("Category Name");
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private final Button addButton = new Button("Add Category");
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private final Grid<Category> categoryGrid = new Grid<>(Category.class);
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private final Button removeButton = new Button("Remove Category");
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private final String CATEGORY_EDIT_ROUTE_TEMPLATE = "categories/%s/edit";
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@Autowired
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private final CategoryService categoryService;
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private final Grid<Category> grid = new Grid<>(Category.class, false);
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private final Button cancel = new Button("Cancel");
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private final Button save = new Button("Save");
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private final BeanValidationBinder<Category> binder;
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private Category category;
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private final CategoryService categoryService;
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private TextField name;
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public CategoriesView(CategoryService categoryService) {
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this.categoryService = categoryService;
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addClassNames("categories-view");
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FormLayout formLayout = new FormLayout();
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formLayout.add(categoryNameField, addButton);
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// Create UI
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SplitLayout splitLayout = new SplitLayout();
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categoryGrid.setColumns("id", "name");
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categoryGrid.setItems(categoryService.findAll());
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categoryGrid.asSingleSelect().addValueChangeListener(event -> {
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if (event.getValue() != null) {
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UI.getCurrent().navigate(String.format("/manage-categories/%d/edit", event.getValue().getId()));
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} else {
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createGridLayout(splitLayout);
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createEditorLayout(splitLayout);
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add(splitLayout);
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// Configure Grid
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grid.addColumn(Category::getName).setHeader("Name").setSortable(true);
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grid.getColumns().forEach(col -> col.setAutoWidth(true));
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grid.setItems(query -> categoryService.list(
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PageRequest.of(query.getPage(), query.getPageSize(), VaadinSpringDataHelpers.toSpringDataSort(query)))
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.stream());
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grid.addThemeVariants(GridVariant.LUMO_NO_BORDER);
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// when a row is selected or deselected, populate form
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grid.asSingleSelect().addValueChangeListener(event -> {
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if (event.getValue() != null) UI.getCurrent().navigate(String.format(CATEGORY_EDIT_ROUTE_TEMPLATE, event.getValue().getId()));
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else {
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clearForm();
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UI.getCurrent().navigate(CategoriesView.class);
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}
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});
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removeButton.setEnabled(false);
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removeButton.addClickListener(event -> removeCategory());
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addButton.addClickListener(event -> addCategory());
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// Configure Form
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binder = new BeanValidationBinder<>(Category.class);
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// Bind fields. This is where you'd define e.g. validation rules
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binder.bindInstanceFields(this);
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add(formLayout, categoryGrid, removeButton);
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cancel.addClickListener(e -> {
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clearForm();
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refreshGrid();
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});
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save.addClickListener(e -> {
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try {
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if (this.category == null) {
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this.category = new Category();
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}
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binder.writeBean(this.category);
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categoryService.update(this.category);
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clearForm();
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refreshGrid();
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Notification.show("Data updated");
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UI.getCurrent().navigate(CategoriesView.class);
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} catch (ObjectOptimisticLockingFailureException exception) {
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Notification n = Notification.show(
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"Error updating the data. Somebody else has updated the record while you were making changes.");
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n.setPosition(Notification.Position.MIDDLE);
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n.addThemeVariants(NotificationVariant.LUMO_ERROR);
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} catch (ValidationException validationException) {
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Notification.show("Failed to update the data. Check again that all values are valid");
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}
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});
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}
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@Override
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@ -77,27 +124,47 @@ public class CategoriesView extends VerticalLayout implements BeforeEnterObserve
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// when a row is selected but the data is no longer available,
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// refresh grid
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refreshGrid();
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event.forwardTo(ExpensesView.class);
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event.forwardTo(CategoriesView.class);
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}
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}
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}
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private void addCategory() {
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Category newCategory = new Category();
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binder.writeBeanIfValid(newCategory);
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categoryService.update(newCategory);
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refreshGrid();
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Notification.show("Category added successfully");
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private void createEditorLayout(SplitLayout splitLayout) {
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Div editorLayoutDiv = new Div();
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editorLayoutDiv.setClassName("editor-layout");
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Div editorDiv = new Div();
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editorDiv.setClassName("editor");
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editorLayoutDiv.add(editorDiv);
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FormLayout formLayout = new FormLayout();
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name = new TextField("Name");
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formLayout.add(name);
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editorDiv.add(formLayout);
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createButtonLayout(editorLayoutDiv);
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splitLayout.addToSecondary(editorLayoutDiv);
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}
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private void removeCategory() {
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if (category != null) {
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categoryService.delete(category);
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clearForm();
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refreshGrid();
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Notification.show("Category removed successfully");
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UI.getCurrent().navigate(CategoriesView.class);
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}
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private void createButtonLayout(Div editorLayoutDiv) {
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HorizontalLayout buttonLayout = new HorizontalLayout();
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buttonLayout.setClassName("button-layout");
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cancel.addThemeVariants(ButtonVariant.LUMO_TERTIARY);
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save.addThemeVariants(ButtonVariant.LUMO_PRIMARY);
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buttonLayout.add(save, cancel);
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editorLayoutDiv.add(buttonLayout);
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}
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private void createGridLayout(SplitLayout splitLayout) {
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Div wrapper = new Div();
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wrapper.setClassName("grid-wrapper");
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splitLayout.addToPrimary(wrapper);
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wrapper.add(grid);
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}
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private void refreshGrid() {
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grid.select(null);
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grid.getDataProvider().refreshAll();
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}
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private void clearForm() {
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@ -107,9 +174,6 @@ public class CategoriesView extends VerticalLayout implements BeforeEnterObserve
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private void populateForm(Category value) {
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this.category = value;
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binder.readBean(this.category);
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}
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private void refreshGrid() {
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categoryGrid.setItems(categoryService.findAll());
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}
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}
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